The Permian extinction predominantly affected
A) reptiles.
B) marine life.
C) insects life.
D) terrestrial life.
Answer: B
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Conductive heat transfer can only occur if solids mediate the energy transfer
Indicate whether the statement is true or false
A loop of wire (resistance = 2.0 m?) is positioned as shown with respect to a long wire which carries a current. If d = 1.0 cm, D = 6.0 cm, and L = 1.5 m, what current is induced in the loop at an instant when the current in the wire is increasing at a rate of 100 A/s?
A. 34 mA B. 30 mA C. 27 mA D. 38 mA E. 0.50 mA
An object of mass m is on the surface of the Earth. The distance to the Sun and the Moon are dS and dM, and the masses of the Sun and Moon are MS and MM. What is the ratio of the gravitational force from the Sun to that of the Moon on the object?
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When you see the bright flash of a meteor, what are you actually seeing?
A) the glow of heated air surrounding a small particle as it burns up in our atmosphere B) emission of visible light from a particle that has not yet entered Earth's atmosphere C) a star that has suddenly shot across the sky D) the flash that occurs when a speeding rock from space hits the ground